HTTP:: Making Smarter Memory Foam
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Shape-shifting memory foam is no longer a novelty, as it has become a basic commodity in many homes. It can be found in bed mattresses and shoe soles, and it is guaranteed to offer its users an extra degree of comfort. However, it is still very expensive, and out of many people's financial reach. This is one of the main reasons scientists at the Northwestern University (NU) and the Boise State University (BSU) recently began to work on a new class of smart foam, which would be less expensive and also suited for a wider array of applications. For example, the experts believe that their innovation could be used in the near future in surgical positioning tools, or maybe even in valve mechanisms. After probing many new and revolutionary materials as the basis for their foam, the team decided to work with a nickel-manganese-gallium alloy, which is able to change its shape only when exposed to a magnetic field. The effort was led by the NU James N. and Margie M. Krebs Professor o!
f Materials Science and Engineering David Dunand, who collaborated with Peter Mullner, a professor of materials science and engineering at BSU.The new foam is capable of “magnetic shape-memory.†This means that, as long as a magnetic field is turned off, it retains whatever shape it's in. As soon as the field is r...
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